C#-窗体之自制闹钟

public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void timer1_Tick(object sender, EventArgs e)
        {
            label1.Text = label1.Text.Substring(1) + label1.Text.Substring(0, 1);
        }
        /// <summary>
        /// 每隔一秒钟就把系统时间赋值给label
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void timer2_Tick(object sender, EventArgs e)
        {
            label2.Text = System.DateTime.Now.ToString("HH时mm分ss秒");//yyyy年MM月dd 
            //+		label2	{System.Windows.Forms.Label, Text: 2021年12月16 12时05分18秒}	System.Windows.Forms.Label 
            string time =Convert.ToString(textBox1.Text);
            if (label2.Text == time)
            {
                labe3.Text = "别睡了，快起来上班啊！！！加油O(∩_∩)O哈哈~";
                SoundPlayer sp = new SoundPlayer();
                sp.SoundLocation = @"夜曲.wav";
                sp.Play();
            }
        }
        private void label2_Click(object sender, EventArgs e)
        {

        }
        private void button1_Click(object sender, EventArgs e)
        {
            //在自己的form1里边不能创建对象
            //直接this.就可以
            this.Close();
        }
    }